:root {
    --ink: #07131F;
    --night: #0D2232;
    --harbor: #173447;
    --screen: #FFF8E6;
    --mist: #C9D6E2;
    --violet: #8D91FF;
    --lime: #CAFE63;
    --coral: #FF7A59;
    --sea: #39D0C8;
    --line: rgba(255, 248, 230, 0.18);
}

* {
    box-sizing: border-box;
}

body {
    min-height: 100vh;
    margin: 0;
    font-family: "Shippori Mincho", serif;
    color: var(--screen);
    background:
        linear-gradient(180deg, rgba(141, 145, 255, 0.22), transparent 220px),
        repeating-linear-gradient(0deg, rgba(57, 208, 200, 0.08) 0 1px, transparent 1px 36px),
        linear-gradient(160deg, #07131F 0%, #0D2232 46%, #201A35 100%);
}

body::before {
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    content: "";
    background:
        linear-gradient(90deg, transparent 0 12%, rgba(255, 248, 230, 0.08) 12% 12.2%, transparent 12.2% 100%),
        repeating-linear-gradient(90deg, transparent 0 78px, rgba(255, 248, 230, 0.035) 78px 79px);
    opacity: 0.8;
}

header {
    padding: 24px 32px;
    color: var(--screen);
    background: rgba(7, 19, 31, 0.82);
    border-bottom: 1px solid var(--line);
}

header h1 {
    margin: 0 0 16px;
    color: var(--screen);
    font-size: 1.7rem;
    font-weight: 700;
}

.header-links {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}

nav {
    color: rgba(255, 248, 230, 0.45);
}

nav a {
    margin: 0 12px 0 0;
    color: var(--mist);
    text-decoration: none;
}

nav a:hover,
nav a:focus-visible {
    color: var(--lime);
}

.admin-link,
.button,
.ghost-button,
.danger-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 40px;
    padding: 10px 16px;
    border-radius: 8px;
    font: inherit;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
}

.admin-link,
.button {
    color: var(--ink);
    background-color: var(--lime);
    border: 1px solid transparent;
}

.admin-link:hover,
.admin-link:focus-visible,
.button:hover,
.button:focus-visible {
    background-color: #F1FF9D;
}

.ghost-button {
    color: var(--screen);
    background-color: rgba(255, 248, 230, 0.04);
    border: 1px solid rgba(255, 248, 230, 0.32);
}

.danger-button {
    color: var(--screen);
    background-color: #A83232;
    border: 1px solid rgba(255, 248, 230, 0.12);
}

main {
    max-width: 1080px;
    margin: 0 auto;
    padding: 48px 24px;
}

.hero {
    position: relative;
    min-height: 520px;
    margin: -48px calc(50% - 50vw) 40px;
    padding: 112px max(24px, calc((100vw - 1080px) / 2 + 24px)) 80px;
    overflow: hidden;
    background:
        linear-gradient(180deg, rgba(7, 19, 31, 0.18), rgba(7, 19, 31, 0.92)),
        linear-gradient(110deg, rgba(255, 122, 89, 0.58) 0 18%, transparent 18% 100%),
        linear-gradient(150deg, #111C33 0%, #184D5D 52%, #07131F 100%);
    border-bottom: 1px solid var(--line);
}

.hero::before {
    position: absolute;
    right: max(24px, calc((100vw - 1080px) / 2 + 24px));
    bottom: 70px;
    width: 38%;
    min-width: 300px;
    aspect-ratio: 16 / 9;
    content: "";
    background:
        linear-gradient(180deg, rgba(255, 248, 230, 0.92), rgba(255, 248, 230, 0.52)),
        repeating-linear-gradient(90deg, transparent 0 18px, rgba(7, 19, 31, 0.12) 18px 19px);
    border: 1px solid rgba(255, 248, 230, 0.7);
    box-shadow: -42px 28px 0 rgba(57, 208, 200, 0.2), 0 32px 80px rgba(0, 0, 0, 0.42);
    transform: perspective(900px) rotateY(-12deg);
}

.hero::after {
    position: absolute;
    right: 0;
    bottom: 0;
    left: 0;
    height: 110px;
    content: "";
    background:
        repeating-linear-gradient(0deg, rgba(57, 208, 200, 0.24) 0 2px, transparent 2px 18px),
        linear-gradient(180deg, transparent, rgba(7, 19, 31, 0.92));
}

.hero > * {
    position: relative;
    z-index: 1;
    max-width: 560px;
}

.eyebrow {
    margin: 0 0 12px;
    color: var(--sea);
    font-weight: 700;
}

.hero h2 {
    margin: 0;
    font-size: 4rem;
    line-height: 1.05;
}

.hero p:not(.eyebrow) {
    margin: 22px 0 0;
    color: var(--mist);
    font-size: 1.15rem;
    line-height: 1.9;
}

.hero-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 28px;
}

.concept-strip {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    margin-bottom: 40px;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 8px;
    background-color: var(--line);
}

.concept-strip article {
    padding: 24px;
    background: rgba(23, 52, 71, 0.86);
}

.concept-strip span {
    color: var(--coral);
    font-weight: 700;
}

.concept-strip h3,
.card h3,
.admin-panel h3,
.admin-item h4,
.page-head h2 {
    margin: 0;
}

.concept-strip h3 {
    margin-top: 12px;
}

.concept-strip p,
.page-head p,
.card p,
.admin-item p {
    color: var(--mist);
    line-height: 1.8;
}

.page-head {
    margin-bottom: 28px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--line);
}

.page-head h2 {
    font-size: 2.4rem;
}

.event-list {
    display: grid;
    gap: 16px;
}

.card {
    position: relative;
    margin-bottom: 20px;
    padding: 24px 24px 24px 30px;
    background: rgba(23, 52, 71, 0.86);
    border: 1px solid var(--line);
    border-radius: 8px;
}

.card::before {
    position: absolute;
    top: 18px;
    bottom: 18px;
    left: 0;
    width: 4px;
    content: "";
    background: linear-gradient(180deg, var(--lime), var(--sea), var(--coral));
}

.time-note {
    color: var(--lime);
    font-weight: 700;
}

.access-card {
    max-width: 620px;
}

.admin-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 24px;
}

.admin-label {
    margin: 0 0 8px;
    color: var(--sea);
    font-weight: 700;
}

.admin-summary {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.admin-summary div,
.admin-panel {
    padding: 24px;
    background: rgba(23, 52, 71, 0.88);
    border: 1px solid var(--line);
    border-radius: 8px;
}

.admin-summary span {
    display: block;
    margin-bottom: 8px;
    color: var(--mist);
    font-size: 0.9rem;
}

.admin-summary strong {
    font-size: 1.8rem;
}

.admin-grid {
    display: grid;
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    gap: 24px;
}

.admin-panel {
    margin: 0;
}

.admin-panel label {
    display: block;
    margin-top: 16px;
    color: var(--mist);
    font-weight: 700;
}

.admin-panel input,
.admin-panel select,
.admin-panel textarea {
    width: 100%;
    margin-top: 8px;
    padding: 12px;
    color: var(--screen);
    background-color: rgba(7, 19, 31, 0.9);
    border: 1px solid rgba(141, 145, 255, 0.7);
    border-radius: 8px;
    font: inherit;
}

.admin-panel textarea {
    resize: vertical;
}

.admin-actions,
.panel-title,
.admin-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.admin-message {
    min-height: 1.5em;
    margin: 16px 0 0;
    color: var(--lime);
}

.admin-list {
    display: grid;
    gap: 14px;
    margin-top: 20px;
}

.admin-item {
    align-items: flex-start;
    padding: 16px;
    background-color: rgba(7, 19, 31, 0.78);
    border: 1px solid rgba(141, 145, 255, 0.44);
    border-radius: 8px;
}

.admin-item-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    flex: 0 0 auto;
    flex-wrap: wrap;
}

.admin-item-actions .ghost-button,
.admin-item-actions .danger-button {
    min-height: 34px;
    padding: 7px 11px;
}

.status-pill {
    flex: 0 0 auto;
    padding: 6px 10px;
    color: var(--ink);
    background-color: var(--lime);
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 700;
}

footer {
    padding: 28px 24px;
    color: var(--mist);
    text-align: center;
    border-top: 1px solid var(--line);
}

@media (max-width: 820px) {
    header {
        padding: 22px 20px;
    }

    main {
        padding: 36px 18px;
    }

    .hero {
        min-height: 560px;
        padding: 76px 24px 210px;
    }

    .hero h2 {
        font-size: 2.7rem;
    }

    .hero::before {
        right: 24px;
        bottom: 64px;
        min-width: 230px;
        width: 72%;
    }

    .concept-strip,
    .admin-grid,
    .admin-summary {
        grid-template-columns: 1fr;
    }

    .admin-head {
        display: grid;
        align-items: start;
    }

    .admin-actions,
    .admin-item-actions {
        flex-wrap: wrap;
        justify-content: flex-start;
    }

    .admin-item {
        display: grid;
    }
}